共查询到17条相似文献,搜索用时 78 毫秒
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论述了一种新型的平衡式套筒调节阀的设计原理,提供了阀芯壁厚和阀门推力的计算公式,并把它与直通单座调节阀以及传统套筒调节阀的使用性能进行了分析比较。 相似文献
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套简调节阀套筒结构的设计与分析 总被引:1,自引:0,他引:1
论述了JN2006系列标准型、低噪声型和多级降压套筒调节阀的作用与性能。介绍了几种套筒调节阀套筒的设计结构,对比分析了传统结构与新型结构的优缺点。 相似文献
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介绍了电液联动套筒调节阀的性能参数、结构及其主要零件的材料。分析了电液联动套筒调节阀的试验过程及其技术要求。阐述了电液联动套筒调节阀技术及其实践经验。 相似文献
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针对高压差下调节阀内的闪蒸空化引起的强振动和高噪声问题,设计了一种消声减振套筒,并对其级数、级间隙和孔径大小进行研究。首先从理论上确定套筒的级数和级间隙,然后建立三维模型,以连续性方程、三维雷诺平均N-S方程和基于各向同性涡粘性理论的k-ε方程组成调节阀内部流动数值模拟的控制方程组,采用结构与非结构网格相结合有限体积法对控制方程组进行离散,应用Fluent对各参数套筒结构调节阀内部流动进行数值模拟计算。结果表明,理论初步确定套筒级数的可行性;适当增大级间间隙与减小孔径大小,有利于高压差调节阀的消声减振,为高压差调节阀的设计提供参考。 相似文献
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针对目前高压密封工况,单一调节阀无法满足多种流量要求的现状,设计了一种高压工况用平衡单座调节阀。该阀阀芯设有平衡孔,设置密封圈与阀芯配合,密封圈嵌在平衡阀笼与降噪阀笼之间的安装槽内,阀芯的外锥面下方设有流量调节曲面,对其进行高压密封试验和阀芯运动性能试验。结果表明,在高压工况下,可降低驱动执行器配置,密封圈与阀芯配合密封优良;流量调节曲面配合阀芯调节流量,满足不同工况要求。高压密封试验的试验压力实际值为0.35 MPa,泄漏量设定值为9.46 L/min,实测泄漏量为1.21 L/min;阀芯运动性能试验包括全行程及全开关时间试验、漂移与抖动试验、始动偏差值试验、基本误差与回差试验和死区试验,试验结果均满足要求;平衡单座调节阀密封优良,开闭时间远小于设定时间、实际偏差小于设定额定偏差(2.50%),已无漂移和抖动,实际信号值和行程值均小于设定值,正反向误差均小于设定基本误差,回差均小于设定回差,死区均小于设定死区值。研究结果对高压工况用调节阀的设计具有参考价值。 相似文献
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创新设计了一种机械结构简单、通流能力强、精度高的机械自力式恒流量控制阀。采用RNGk-ε湍流模型和SIMPLE算法对不同阀芯位移进行数值模拟,根据模拟结果对模型进行优化。利用自行搭建的高精度数据采样实验平台对设计的恒流量控制阀进行实验研究,实验验证该恒流量控制阀能通过线性弹簧实现高精度恒流量控制功能。 相似文献
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In response to technical issues such as the ineffective noise reduction impact of balanced cage and single-seat control valves, the U-shaped noise reduction cage control valve is investigated and developed. In addition, its equal percentage flow properties and noise reduction impact are good, allowing it to effectively minimize the noise created by the change of fluid parameters of medium such as vapor, gas, and gas-liquid two-phase flow. The flow coefficient and flow properties were analyzed. The noise features of the medium air flow at small and large openings of 30% and 85% are simulated and analyzed, respectively. The pressure, velocity, and temperature of the inlet and outlet air, as well as the sound intensity maximum and sound power level maximum, are also analyzed with the opening curves. A small opening of 30% was selected, and the noise characteristics of cavitation generated by the medium water flow were simulated and analyzed. Together with the pressure and temperature change curves of the incoming water, the volume maxima and density minima of water are studied. The maximum sound intensity and sound power level of water are analyzed using the pressure and temperature curves of inlet water, as well as the cavitation coefficient and the degree of opening. The results of the trial for the pressure resistance of the valve body and the trial for the valve seat seal indicate that both the valve body strength and the valve seat seal meet the specifications. Comparing the noise trial results and simulation results reveals that the sound intensity and sound power level assessed by the trial and simulation are comparable, and the noise reduction impact of the control valve is positive. 相似文献
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结合阀门密封面的结构形式以及影响阀门回座性能的几个因素,论述了保证阀瓣回座性能的条件和各种密封面的加工方法。 相似文献
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